General description These replacement filter cartridges are compatible with Karcher NT20/1, NT30/1, and NT38 vacuum cleaners. The package includes two high-efficiency HEPA filter elements along with a dust cover, designed to effectively trap dust and allergens. Technical specifications Dimensions: 115 x 120 mm Material: High-efficiency HEPA filter paper Filtration efficiency: Filters 99% of fine particles Usage These filters are ideal for households with pets, providing eco-friendly, anti-allergic, and powerful filtration to maintain a clean environment.